Use iframe to submit a form without refreshing the page_HTML/Xhtml_Web page production

So we introduce an embedding framework to solve this problem. The specific principle is: when the form submits data, the submission target is not set to the current page, but an embedded frame in the current page.
First you should insert an embedded frame under the body:

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The code is as follows:

Then You should set the target of the form to the embed frame, like this:

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The code is as follows:

This way we get the goal we need.